Uart2 with sdma1 test error in imx8mq

[hongxingyu1982]

Hi

Now I test uart2 with sdma1, but when I write character to "dev/ttymxc1" (it is for uart2 device), It report the blew error:

 

Could anyone know this error, and how to fix it ?

BR

[hongxingyu1982]

HI everyone:

Could anyone can see this issue ? 

Thanks

Br

[igorpadykov]

Hi Hongxing

what bsp used in the case, suggest to try ones from

source.codeaurora.org/external/imx/linux-imx  repository
linux-imx - i.MX Linux kernel 

for uart2 one can check below dts (it can be used by M4)

fsl-imx8mq.dtsi\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel 

fsl-imx8mq-evk-root.dts\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel 

Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[hongxingyu1982]

HI igor

Any progress ?

//BR

[hongxingyu1982]

hi igo

Any progress？

BR

[hongxingyu1982]

Hi igor

Any progress ?

BR

[hongxingyu1982]

HI igor

If I test the uart2 without sdma1, it is ok.

So the uart2 is ok, maybe the sdma1 is not ok.

So Could you give some supply if is the sdma1 is not ok?

BR

[hongxingyu1982]

If I test the uart2 without sdma1, it is ok.

So the uart2 is ok, maybe the sdm1 is not ok.